Foe-Glass

Foe-Glass
Object information
Usage	Warned owner of enemies' presence
Owners	Alastor Moody Bartemius Crouch Junior Sage Bragnam

"Oh that's my Foe-Glass. See them out there, skulking around? I'm not really in trouble until I see the whites of their eyes."

— Bartemius Crouch Junior, impersonating Alastor Moody

A Foe-Glass was a type of Dark Detector. It looked like a mirror, but instead of a reflection it showed the enemies of its possessor. The figures appeared as "shadows" but became clearer and more visible as the enemies became closer to the possessor. They were seemingly difficult to construct, with Sage Bragnam needing a long-lost schematic to properly build one for himself.

History

1994–1995

The fake Moody and the shadows of his enemies in his Foe-Glass

Bartemius Crouch Junior, while impersonating Alastor Moody, had Moody's Foe-Glass in his office during Harry Potter's fourth year at Hogwarts School of Witchcraft and Wizardry. He told Harry that he wasn't really "in trouble" until he could see "the whites of their eyes". Later in the school year, after Cedric Diggory's tragic death, it was revealed that Crouch's enemies shown in the glass were Albus Dumbledore, Minerva McGonagall, and Severus Snape, all notable members of the Order of the Phoenix. Crouch, however, was too focused on Harry at the time, meaning that he did not notice the shadows within the glass were becoming clearer, warning him that the three were soon approaching, which ultimately led to his exposure and downfall.

1995–1996

When Harry and the other members of Dumbledore's Army first entered the Room of Requirement, he found, among other Dark Detectors, the fake Moody's Foe-Glass. By this time it was cracked, but still functional.

The Calamity

During the Calamity in the late 2010s and early 2020s, Sage Bragnam assisted a Calamity Investigator working for the Statute of Secrecy Task Force in trying to turn Foe-Glass Dark Detectors into "Calamity Predictors", although the Calamity spell proved not to be "dark" enough for the artefacts to catch hold of it and work correctly. The same Calamity Investigator later discovered a long-lost schematic regarding the building of Foe-Glasses and delivered it to Sage, who was excited to now be able to construct his own Foe-Glass.

Appearances

• Harry Potter and the Goblet of Fire (First appearance)
• Harry Potter and the Goblet of Fire (film)
• Harry Potter and the Order of the Phoenix
• Pottermore
• Wizarding World
• LEGO Harry Potter
• Harry Potter: Wizards Unite
• Harry Potter: Magic Awakened (Mentioned in History of Magic classes)
• Hogwarts Legacy